US2018127522A1PendingUtilityA1

Short-Chain Polyethylene Homopolymers Having Improved Grindability

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Assignee: CLARIANT INT LTDPriority: Apr 29, 2015Filed: Apr 26, 2016Published: May 10, 2018
Est. expiryApr 29, 2035(~8.8 yrs left)· nominal 20-yr term from priority
Inventors:Andreas LangHans-Friedrich HerrmannGerd HohnerSebastijan BachRainer Fell
C09D 11/03G03G 9/08782C08F 4/65912C08F 110/02C08F 2500/08C08F 2500/11C09D 7/69C09D 11/12C08L 91/06G03G 9/0906C08F 2500/17C08F 4/6592
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Claims

Abstract

A polyethylene homopolymer having improved grindability, prepared with a metallocene catalyst system and is characterized by a melt viscosity of 5 to <60 mPa·s at 140° C. and a ram penetration hardness ranging from 210 to 500 bar, as measured according to DGF M-III 9e, and to use thereof as a component in toners, hot-melt adhesives or pigment master batches.

Claims

exact text as granted — not AI-modified
1 . A polyethylene homopolymer, prepared with a metallocene catalyst system and having a melt viscosity as measured to DIN 53019 in the range from 5 to <60 mPa·s at 140° C. and by a ram penetration hardness as measured to DGF M-III 9e of 210 to 500 bar. 
     
     
         2 . The polyethylene homopolymer as claimed in  claim 1 , having
 a dropping point of 113 to 128° C.,   a melting point of 100 to 123° C.,   a density of 0.93 to 0.97 g/cm 3  at 25° C.,   a heat of fusion of 210 to 270 J/g.   
     
     
         3 . The polyethylene homopolymer as claimed in  claim 1 , having an average particle size d 50  of ≤15 μm. 
     
     
         4 . The polyethylene homopolymer as claimed in  claim 1 , having an oxygen-containing group content and an acid number resulting therefrom in the range from 0.5 to 100 mg KOH/g. 
     
     
         5 . A micronized wax having an average particle size d 50  of ≤15 μm, comprising a polyethylene homopolymer having a melt viscosity of 5 to <60 mPa·s at 140° C. 
     
     
         6 . An additive component for printing inks comprising a polyethylene homopolymer as claimed in  claim 1 . 
     
     
         7 . An additive component for coating materials comprising a polyethylene homopolymer as claimed in  claim 1 . 
     
     
         8 . A component of hotmelt adhesives comprising a polyethylene homopolymer as claimed in  claim 1 . 
     
     
         9 . A component of photographic toners comprising a polyethylene homopolymer as claimed in  claim 1 . 
     
     
         10 . A component of pigment masterbatches comprising a polyethylene homopolymer as claimed in  claim 1 . 
     
     
         11 . An additive component for printing inks comprising a micronized wax as claimed in  claim 5 . 
     
     
         12 . An additive component for coating materials comprising a micronized wax as claimed in  claim 5 . 
     
     
         13 . A component of hotmelt adhesives comprising a micronized wax as claimed in  claim 5 . 
     
     
         14 . A component of photographic toners comprising a micronized wax as claimed in  claim 5 . 
     
     
         15 . A component of pigment masterbatches comprising a micronized wax as claimed in  claim 5 .

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